AirDoctor AD1500 vs Levoit LAP-C311S-WUSR
A spec-only comparison using ENERGY STAR certification data. We have not tested either unit, and features like noise, filter price and build quality are not covered here.
- Cleaning speed: the Levoit LAP-C311S-WUSR has the higher smoke CADR (175 vs 170 cfm, 3% more).
- Running cost: the Levoit LAP-C311S-WUSR uses less electricity per ENERGY STAR (132 kWh/yr), about $6.23/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 255 sq ft vs 262 sq ft.
Both sit in ENERGY STAR data as Medium rooms (150–249 cfm) units by smoke CADR. Listed differences: only the Levoit LAP-C311S-WUSR is listed as connected (app/Wi-Fi); reported ozone is 3 ppb vs 0 ppb. Over 5 years at the U.S. average rate, the electricity difference is about $31.13 (estimate).
| AirDoctor AD1500 | Levoit LAP-C311S-WUSR | |
|---|---|---|
| Smoke CADR (cfm) | 170 | 175 |
| Dust CADR (cfm) | 174 | 175 |
| Pollen CADR (cfm) | 173 | 200 |
| ENERGY STAR room size | 264 sq ft | 271 sq ft |
| AHAM 2/3-rule room size | 255 sq ft | 262 sq ft |
| Annual energy | 166 kWh | 132 kWh |
| Est. electricity/yr (U.S. avg) | $30.39 | $24.17 |
| Smoke CADR per watt | 6.01 | 7.81 |
| Ozone (reported) | 3 ppb | 0 ppb |
| Technology | Fan and Filter,Ion Generator | Fan and Filter |
| Filters listed | HEPA-Type | HEPA |
| Auto mode | None | None |
| Connected | No | Yes |
| Most Efficient | No | No |
| Source | ENERGY STAR record 4674734 | ENERGY STAR record 4639114 |
Purchase price and filter cost are not included (data gap). Electricity estimates use 18.31¢/kWh (EIA).
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See AirDoctor air purifiers on the manufacturer's site (plain link, not an affiliate link)
See Levoit air purifiers on the manufacturer's site (plain link, not an affiliate link)